hi ALLI turn on and turn off laptop and site code is changed = machine edition 6.5 , I have a question regarding he computer, the day yesterday prompted a license for a site code,today at turn on my computer, my site code changed again, every time I turn on and turn off my laptop my site code is changed , I have installed the software pro simatic S7 2006, rs-logix 5000 (10,11,12,13,15,16,17,18,19), machine edition 6.5, rs view machine edition, win cc v 7.5, all licenses are lost and I have to reinstall, not that it can be and let me know your point of view.